how to assemble a simulation engine. - Geant4 - Cern

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how to assemble a simulation engine. - Geant4 - Cern

Hadronic physics simulation engines forGeant4.


Model managementin GHAD


Because of this " %


Use case packages of Physics Lists &'()*+*+,-,&&&"*. &*(/'0.1 (/(/&*'"-#$&"23 23343(*-53*+


To make tailoring easier, and the codemore readable, we introduced Builders.


Now, what does this mean ? 6 789 -" : " - ""


A sample use-case:HEP calorimetry


5 GeV pi- in copperPi-+Ppi0+nPi-+Ppi0+nPi-absorptionPi-+n∆ #1;$pi-+nPi-+p∆#1;$pi-+p


Improvements are based on interplay ofapplication results and model verification 3(*-5 2 / 5 ' '# $


Proton reaction cross-sectionsection J.P.Wellisch


Pi+ reaction cross-sections: sections: dots: data, opensymbols: two different parameterization


Particle multiplicities, QGS model(dots are data, circles are MC, Nucl.Phys.A,528,p754ff(1991))


Pion production examples, QGS:Rapidity distributions and invariantcross-section section predictions in quark gluon string model 100 GeV pi+ on Gold 400GeV protons on LithiumJ.P.Wellisch


Contributions of the modelcomponents to the neutron spectrum


Predicting the Delta production cross-section in pp scattering by binary casacde(kinks due to caching) J.P.Wellisch


Some results =%


Courtesy ofThe ATLASHEC community


20 GeV piinCopper


20 GeV piinCopper


20 GeV piinCopper


20 GeV piinCopper


HEC G4 5.0 (true geometry, my toy analysis)data from NIM, A482,94ff.


ATLAS HEC G4 5.0 (true geometry, my toy analysis)data from NIM, A482,94ff. J.P.Wellisch


HEC shower shapes G4 5.0 (true geometry, my toy analysis)data from NIM, A482,94ff.


The recommended procedure for using mysimulation engines: >896 = 3 + + ??? 9+""


Conclusions:


The supportprocess –static view


The support process – dynamic view

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